Ecotoxicological Process Simulation Of Contaminative Effluents From Soil-Water Interfaces

An ecotoxicological processes simulation research on contaminative effluents from soil-water interfaces was performed in this paper. The heavy metal Cd, Zn and a organic pesticide methamidophos was used to simulat the contaminative effluents from soil-water interfaces. The grass carp (Ctenopharyngodon idellus) was used as the test aquatic life. The SOD and POD of grass carp liver tissues were used as the biomarker. The generalized theory of joint effects was employed to analysis the mechanism of single and joint toxicity of Cd, Znand MAP, and the influences of the soil-water interface runoff on the single and joint toxicity ofCd, Zn and MAP. Main conclusions were summarized as follows:1. The joint actions of Cd, Zn and MAP have close relation with exposure time;2. The joint actions of Cd, Zn and MAP are complicate, while the generalized theory of joint effects was possible to be used to explain them.3. Contaminative effluents from soil-water interfaces enhanced the stress to the Ctenopharyngodon idellus during the ecotoxicological processes.4. Contaminative effluents from soil-water interfaces changed the joint action type during the ecotoxicological processes.5. The combination of concentration levels of different pollutant take a more important role in contaminative effluents from soil-water interfaces than otherwise during the ecotoxicological processes.